Electrotreated Carbon Nanotube Membranes for Facile Oil-Water Separations

Karen Adie Tankus; Liron Issman; Mikhail Stolov; Viatcheslav Freger

doi:10.1021/acsanm.8b00442

Electrotreated Carbon Nanotube Membranes for Facile Oil-Water Separations

Karen Adie Tankus, Liron Issman, Mikhail Stolov, Viatcheslav Freger

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Oil-contaminated effluents are widespread, yet purifying them of finely dispersed residual oil presents a significant challenge. Here we report on reactively spun carbon nanotube (CNT) mats, whose high electric conductivity is employed to irreversibly render them highly hydrophilic through electrooxidation (EO), while retaining the morphology, mesh size, conductivity, and mechanical strength of the pristine CNT material. EO treatment converts natively hydrophobic CNT mats to efficient filtration membranes, whose 30 nm mesh size favorably compromises between the hydraulic permeability and oil breakthrough pressure and allows complete and robust removal of dispersed oil (including surfactant-stabilized) down to its solubility in water.

Original language	English
Pages (from-to)	2057-2061
Number of pages	5
Journal	ACS Applied Nano Materials
Volume	1
Issue number	5
DOIs	https://doi.org/10.1021/acsanm.8b00442
State	Published - 25 May 2018
Externally published	Yes

Keywords

electrooxidation
electrowetting
filtration membranes
multiwalled carbon nanotubes
oil-water separation

ASJC Scopus subject areas

General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsanm.8b00442

Cite this

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title = "Electrotreated Carbon Nanotube Membranes for Facile Oil-Water Separations",

abstract = "Oil-contaminated effluents are widespread, yet purifying them of finely dispersed residual oil presents a significant challenge. Here we report on reactively spun carbon nanotube (CNT) mats, whose high electric conductivity is employed to irreversibly render them highly hydrophilic through electrooxidation (EO), while retaining the morphology, mesh size, conductivity, and mechanical strength of the pristine CNT material. EO treatment converts natively hydrophobic CNT mats to efficient filtration membranes, whose 30 nm mesh size favorably compromises between the hydraulic permeability and oil breakthrough pressure and allows complete and robust removal of dispersed oil (including surfactant-stabilized) down to its solubility in water.",

keywords = "electrooxidation, electrowetting, filtration membranes, multiwalled carbon nanotubes, oil-water separation",

author = "Tankus, {Karen Adie} and Liron Issman and Mikhail Stolov and Viatcheslav Freger",

note = "Publisher Copyright: Copyright {\textcopyright} 2018 American Chemical Society.",

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doi = "10.1021/acsanm.8b00442",

language = "English",

volume = "1",

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T1 - Electrotreated Carbon Nanotube Membranes for Facile Oil-Water Separations

AU - Tankus, Karen Adie

AU - Issman, Liron

AU - Stolov, Mikhail

AU - Freger, Viatcheslav

PY - 2018/5/25

Y1 - 2018/5/25

N2 - Oil-contaminated effluents are widespread, yet purifying them of finely dispersed residual oil presents a significant challenge. Here we report on reactively spun carbon nanotube (CNT) mats, whose high electric conductivity is employed to irreversibly render them highly hydrophilic through electrooxidation (EO), while retaining the morphology, mesh size, conductivity, and mechanical strength of the pristine CNT material. EO treatment converts natively hydrophobic CNT mats to efficient filtration membranes, whose 30 nm mesh size favorably compromises between the hydraulic permeability and oil breakthrough pressure and allows complete and robust removal of dispersed oil (including surfactant-stabilized) down to its solubility in water.

AB - Oil-contaminated effluents are widespread, yet purifying them of finely dispersed residual oil presents a significant challenge. Here we report on reactively spun carbon nanotube (CNT) mats, whose high electric conductivity is employed to irreversibly render them highly hydrophilic through electrooxidation (EO), while retaining the morphology, mesh size, conductivity, and mechanical strength of the pristine CNT material. EO treatment converts natively hydrophobic CNT mats to efficient filtration membranes, whose 30 nm mesh size favorably compromises between the hydraulic permeability and oil breakthrough pressure and allows complete and robust removal of dispersed oil (including surfactant-stabilized) down to its solubility in water.

KW - electrooxidation

KW - electrowetting

KW - filtration membranes

KW - multiwalled carbon nanotubes

KW - oil-water separation

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DO - 10.1021/acsanm.8b00442

M3 - Article

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JF - ACS Applied Nano Materials

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ER -

Electrotreated Carbon Nanotube Membranes for Facile Oil-Water Separations

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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